1983•Journal of geomagnetism and geoelectricityOpen access

Observation of the helium 10830 .ANGS. airglow emission in midlatitude.

Katsuhisa SUZUKI

Abstract

The helium 10830Å airglow in twilight was observed by a tilting filter photometer. Over three years observation reveals the seasonal variation and the solar zenith angle dependence of the helium emission. The enhancement of the emission was observed in winter. The solar zenith angle dependence was also investigated. The observation results show that the conjugate photoelectrons and the diurnal variation of the exsospheric temperature affect the helium emission.

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Key concepts: Airglow, Zenith, Solar zenith angle, Photometer, Helium, Twilight, Atmospheric sciences, Middle latitudes